Improvement in adjustable animal-powers



parte entre.

NICHOLAS POTTER, 0F EAST TROY, PENNSYLVANIA.

I Letters Patent No. 112,179, dated February 28,1871.

IMPROVEMENT lN ADJUSTABLE ANIMAL-POWERS.

The Schedule referred to in these Letters Patent and making part o the same,

To all whom it may concern:

Be it known that 1, NIcHoLAs POTTER, of East Troy, in the county of Bradford and State of Pennsylvania, have invented a new and useful Improvement in Adjustable Animal-Power; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to t-llc accompanying drawing forming part of this specification, in which- Figure l is a side view of my improvedpower. Figure 2 is a detail sectional view of the same.` Y Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved animal-power which shall be so, constructed that the inclination of the track may beincreased lor lessened, as may bc required, without stopping the machine, removing the animal, lengthening or shortening the endless band, or affecting any 0f-the operating parts of the machine; and

lt consists in the construction and combination of various Vparts of the machine, as hereinafter more fully described.

A is the frame of the machine, which also serves as a stall for the animal.

B is the frame that forms th'eftrack for thc -endless band upon which the animal walks.

C are sleeve-boxes that forni the bearings for the upper or driving-roller. Y

The boxes O nre securely attached to the end posts of the frame A, and pass through holes in the upper ends of the side bars of the track-flame B, so as to pivot or hinge the said t|ack-fr'alue to the main frame of the machine.

D is a shaft, pivoted to the roar part of the baseframe of the machine.

To the shaft D are rigidly attached two arms, E, having friction-rollers .F pivoted to their rear ends,y

upon which rollers the lower parts of the side barsof the track-frame B rest, so that, by turning the shaft D, the lower end of thesaid frame B may be raised and lowered, to adj ust its inclination ofthe track, as may be required.

To one end of the shaft D is rigidly attached the lower end of a long lever, G, which extends up along the side of the frame A; and to its upper end is attached one end of the .rope or chain H, the other end of which Vis attached to a drum or pulley, I, pivoted to the side of the frame A, and provided with a crank or lever J, so that, by turning the drum orpulley I in one or the other direction, to wind the rope or chain H upon or unwind it from the said drum I, to operate the lever G, and thus adjust the inclination of Ithe track, as required.

K is a pawl, pivoted to the frame A, the engaging end of which takes hold of ratchet-teeth formed upon or attached to the saidldrunl or pulley I, to hold it securely in any position into which it may be turned.

Having thusdescribed my invention,

I claim as new, and desire to secure by Letters Patentl. The sleeve boxes C, in combination with the frame A7 and with the track-frame B, substantially asv herein shown and described, to pivot or hinge the said p frame B to the said frame A, as and for the purpose set forth. l,

2. The combination of the shaft D, rigid arms E, frictionrollers F, long lever G, rope or chain H, drum or pulley I, crank or lever J, and pawl K, with each other and with the frame A and track-frame B, substantially as herein shown and described, and for the purposes set forth.

NICHOLAS POTTER.

Witnesses:

FREDK. A. LONG, Taos. MCGABE. 

